i have purchased Samsung NP300E5Z-S05AE recently when i use wifi by attaching wired device to wireless internet starts to disconnect after few minutes and works fine if i use it via ethernet it is really pissing me off .
is it some wifi card problem ?
What is the issue here? You said "attaching wired device to wireless internet" what is that exactly? Are you just saying the laptop disconnects from your router? Did you reset the router or do a firmware update? Have you tested the laptop in other areas, does it drop out in other places?